\{V2 Al.UATK'OSS TTKh'OrOhS AM) lIK'I'KK'Orons ri'.CK. 



as t lu' tlorso V(Mi(r;il llal ttMiinu is coiicciimmI, so I IimM lie sides oI' i\w 

 slu'il arc produced iiilo well deliiKMl " Uecls," while lli(> dorsal (lo\v«'r in 

 (lie I'^iji. 1 Ic) sid(> of (lie iiiolliisk shows (he iiiediau .i:roo\-e. which also 

 charac(erizes (he d(>rsai lip ot' (he shell ol' ( he ( 'a\()liiiiida' (see also 

 (h(> same V\^. Ic). ''he slu-U oC (he iiidi\idiial here iij;nred was <»iie of 

 du' larn'cst of (lu> colleclions. It is no( unil'oriidy jirooved o\(Mi(s 

 entire leii^di, sine*' (he (raiisverse niarkiiiiis (end (o disappear a( the 

 most pos(erior par( of (lu> slu>ll, as scimi in I he (hn'sal (lef( hand) face 

 «d" tht> la(eral vi«Mv, <i of l-^iu'. II. 'I'hc e\a(( form of the most anterior 

 edm' ol" (he sh«'ll eonld not be deiermined on acconni of llu> Itrcakin^' 

 olV of (he delicale nia(erial. so (ha( (he do((ed lines in /> repr(\sent 

 only (he broken od^e as it existed in tln^ shell as presiM'xcd in (he col- 

 leelions — no( innalnre. in Clio {s.str.) pjif<i))ii(U(t<i, INj;'. iri((( la(eral,/> 

 MMdral, and c (Von(, \ iew ) (he an(eiior part of (h(> shell is (he nu)st 

 e\a.u\uerated into (he lalcral "keels" and (he depdi of (he dorsal 

 <;roo\ e, as can best bo setMi in theop(i«'al section of (lu> shell shown 

 in <■ ; I he very w ide Uoels are bent \ tMi( lalw ards and t he dorsal .<4roove 

 (below in I he draw inji) ai>pears deep and narrow in like manner. .\ 

 laleral \ iew, (/. shows (he <>\(ent of the aperture and (he s(rai.iihtness 

 kA' (he pos(erior part ot' the shell and (lu>lenulhof the projection of 

 thedor-^al part into a ^I'ooN'cd lou^ne which underlies (he (ins. Tlu^ 

 doited lines in (t and /' show the condition ot the shell when li^ured, 

 but it wasapparendy not complete, ami so may not truthfully r»'prc- 

 sen( the real outline <^i (he anterior edu(> of a piMiect shell. 



l-'inally, in V'xiX- 1<'> 'M\^ represented t w o \ iew s of Vuricyina colinnilld, a 

 from latiM'al ami /> from \-enlral \ iew . Ordinarily, in tlu> li\in,u' spec 

 inuMis, one can lind a uood many with (he (Mubiyonic shell s( ill a( (ached 

 (o tlu» posbuior end of tlu^ shell of the adult animal.* but they wore 

 mtt presiMit in tlu>se collectt'd by tlH> Alhtdross, and so haxc the ])oste- 

 rior eird bluntly rounded, althouuli com|)ressed sonunvhaf (ui the ven- 

 tral educ as is shown in tlu> lateral view <j. of Avhich the dorsal face of 

 the (iunre is (oward (ho left. The anterior end of the she'd also shows 

 adi(Ver(>nce in (he (wd lii>sot"(he shell, ('urirriiid coIidiuIIii, (heretbre, 

 (hus di(Ters from (he odiers; while (he vari(»us spi'cies of Clio nu'asure 

 dins w idi «'ach o(her as oudined lor the (ijiures oi' PI. lit. 



It was purposed in (Miterin.u upon (he sdidy of these collect ions to 

 deal especially with tin' coiuparativo ainitomy of (he jironp to be 

 brouuhl out by the method of serial s<>ctions, as tMii|)loyed in a tbrmer 

 paper for one of die CymbnliidaJ bid as soin(> of the species were lier»> 

 represented only by I'lnply shells, and since so many tissues of liviuj^' 

 animals were (roated only with strouu' alcohol as they were collectod, 

 it sooinod ailvisablo to deal in this .sod ion of the work only with (hodis 

 tiibution of the ptorojxxls as IndicattMl by this NoyajiO of the vessel, to 



' S»M' li^iiio in t'lvons '•(ntrodiicliou (<> Syslt'inntic ('ontholoiiv," IM. 12, \'\ix. !•. 

 tOn tho Anatomy and llislolouy of (\vnil>ulit>i>sis lalioula. Stiidi<s I'loui Hio. 

 l.al>.. .lolnis Hopkins rnivtrsity, NOl. iv.Xo.C). 



